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CVE-2026-121006                                      CPAN Security Group
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         CVE ID:  CVE-2026-121006

   Distribution:  HTTP-Body
       Versions:  before 1.24_02
       MetaCPAN:  https://metacpan.org/dist/HTTP-Body
       VCS Repo:  https://github.com/libwww-perl/HTTP-Body

HTTP::Body versions before 1.24_02 for Perl parse the trailer in
quadratic time

Description
-----------
HTTP::Body versions before 1.24_02 for Perl parse the trailer in
quadratic time.

Everything after the last chunk in the same call to add() is parsed
with HTTP::Headers, which takes time quadratic in the number of fields
of one name.  For example, it takes several seconds to parse 16 KiB of
"a:" lines.

A remote attackercan exhause the CPU with a single request.

HTTP::Body version 1.25 limits the size and number of lines in the
trailer.

Problem types
-------------
- CWE-770 Allocation of Resources Without Limits or Throttling

Solutions
---------
Upgrade to HTTP::Body version 1.24_02 or later.

References
----------
https://metacpan.org/release/GETTY/HTTP-Body-1.24_02/changes
https://github.com/libwww-perl/HTTP-Body/commit/983dd4ca3b863ab513240b02c91c3114fb299389.patch